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论文和作业联系qq2019910207或咨询微信15927685953，为了准确获取需要资料请在付费前加qq或微信咨询，请认真核对是您需要的题目后再付费 查找更多国开资料请登录http// 单元自测4（10分） 试卷总分100 得分100 一、选择填空阅读下面的对话或句子，从A、B、C三个选项中选出一个能填入空白处的最佳选项。 1. Do you prefer a portable or a clumsy 3D printer . A. No, a portable 3D printer is more useful. B.Yes, I would not have a clumsy one. C.I prefer a portable one to a clumsy one. 2.They are testing the 3D printer. Don’t you come and see it What A.Where is it displayed B. It really matters. C.That’s fine. 3. What do you want to be . A.I want to have a cup of coffee. B. I want to be honest. C. I would study computer science than dancer. 4.Touch- ____ 3D maps help the blind too much. A.responsive B.speaking C.listening 5.____ the new law is used one day, I hope it will not punish people using 3D printers for personal purposes. A.when B.why C.If 6.二、阅读理解阅读下面的短文，根据文章内容从A、B、C三个选项中选出一个最佳选项。 （课外资料） 国开答案请进 或请联系 In the grass, a baby duck was hatched 孵化 out in a college biology lab with a backward left foot. At the time, it probably wouldn’t have survived, if Mike Gary didn’t recommend a proper operation to cut off that bad foot. Months after the healing process, engineers at Novacopy Company produced a 3D printed model that would be used to create a prosthetic 修复的 foot for the duck. Considering that ABS plastics were not flexible enough for this type of rcise, the Novacopy company made a three-dimensionally modeled foot made of silicone, with the hope to create a permanent prosthesis假肢 for the duck. It took just 13 hours to produce. This 3D prosthesis demonstrated the 3D technologies can be used not only for human application, but also in foreign subjects such as animals and other medical treatments. Where was the baby duck hatched out 1 A. In a college biology lab. B. In a back yard. C. In Noacopy Company. 2. What was wrong with the baby duck 2 A. It didn’t survived. B. It was born with a backward left foot. C. Mike Gary cut off that bad foot. 3. Could ABS plastics be used to produce a 3D printed model that would be used to create a prosthetic foot for the duck 3 A. No, because ABS plastics were not flexible enough. B. Yes, but it could only be produced by Novacopy Company. C. Yes, because it was made of silicone. 4. How long did it take to create a permanent prosthesis for the duck 4 A. 10 hours. B. 13 hours. C. 30 hours. 5. What did the last sentence of this passage indicate 5 A. 3D technologies can be used only for human application. B. 3D technologies can be used only for foreigners. C. 3D technologies can be used to human, animals and other medical treatments. 1.__1__ A.A B.B C.C 2.__2__ A.A B.B C.C 3.__3__ A.A B.B C.C 4.__4__ A.A B.B C.C 5.__5__ A.A B.B C.C
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